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LTC1985-1.8 - Micropower Precision Triple Supply Monitor with Push-Pull Reset Output in a 5-Lead SOT-23 Package

Datasheet

Documentation

Features

Monitors Three Inputs Simultaneously:
3V, 1.8V and Adjustable
±1.5% Threshold Accuracy Over Temperature
Very Low Supply Current: 10µA Typ
200ms Reset Time Delay
Power Supply Glitch Immunity
Guaranteed RESET for V_CC3 >/= 1V or V_CC18 >/= 1V
3V Active-Low Push-Pull Reset Output
5-Lead SOT-23 Package

Typical Application

Description

The LTC™1985-1.8 is a triple supply monitor intended for systems with multiple supply voltages. The reset output remains low until all three supplies have been in compliance for 200ms. Tight 1.5% accuracy specifications and glitch immunity ensure reliable reset operation without false triggering. The RST output is guaranteed to be in the correct state for V_CC18 or V_CC3 down to 1V. The LTC1985 may also be configured to monitor any one or two V_CC inputs instead of three, depending on system requirements. Very low (10µA typical) supply current makes the LTC1985 ideal for power conscious systems. The LTC1985 is available in a 5-lead SOT-23 package.

Packaging

SOT-23

Order Info

Package Variations and Pricing

Part Number	Package	Pins	Temp	Price (1-99)	Price (1k)^*
LTC1985ES5-1.8#PBF	SOT	5	E	$1.66
LTC1985ES5-1.8#TRMPBF	SOT	5	E	$1.66	$1.43
LTC1985ES5-1.8#TRPBF	SOT	5	E	$1.66	$1.41
LTC1985ES5-1.8	SOT	5	E	$3.32
LTC1985ES5-1.8#TR	SOT	5	E	$3.32	$2.82
LTC1985ES5-1.8#TRM	SOT	5	E	$3.32	$2.86

^* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.